> It will triple the capacity of our north-south transportation system at a fraction of the cost of equivalent airport capacity.
> This is something that people don't understand
You may be confusing a lack of understanding with straight up apathy.
Put another way, I don't think people care if the capacity is tripled. They're not interested in traveling with 100,000 of their closest friends that hour. They're interested in getting where they want to go, faster/cheaper/easier.
Pushing system capacity as a feature has a bit of a socialist bent, and that's a hard sell in the US.
>That's 500 lanes of theoretical freeway capacity, or 1000 lanes under realistic operating conditions
Also, I think your calculation are off by at least an order of magnitude. I thought that freeways can carry about 2000 vehicles per hour (on modestly congested urban freways). Assuming at least dual-occupancy vehicles, that's only 25 lanes.
> more than the total capacity between all Bay Area and all L.A.-area airports, even if you operated that route solely with widebody jets, which we don't.
This is an excellent argument against all that extra capacity being some kind of critical feature. If (you may be arguing "when" not "if", but that's not a given) we really need it, we could upgrade airport capacity to use more widebody jets.
In essence, we already have spare capacity (which could, by the way, be used to go other places), and you're suggesting it's critical that we take the opportunity to greatly increase the spare capacity just to go between the Bay Area and LA. I disagree.